The Anker Soundcore Boom 3i carries an IP68 ingress protection rating, with a waterproof depth of 1 meter, making it fully protected against water exposure. Its physical dimensions measure 210 mm in height, 85 mm in width, and 78.5 mm in thickness, with a total volume of 1401.225 cm³, giving it a compact cylindrical form. The speaker houses 2 drivers and includes a control panel placed directly on the device, along with a detachable cable for added convenience. It does not feature a neodymium magnet, touch screen, RGB lighting, remote control, or an included travel bag.
The Anker Soundcore Boom 3i delivers a total audio output of 2 x 25W, spread across two drivers for a combined 50W of power. The speaker does not include stereo speakers or a subwoofer, and magnetic shielding is also absent from its design.
The Anker Soundcore Boom 3i is equipped with a rechargeable battery rated at 16 hours of use, and a battery level indicator is included to keep track of remaining charge. The battery is not removable, and wireless charging is not supported.
The Anker Soundcore Boom 3i connects wirelessly via Bluetooth with a maximum range of 10 meters, though it does not support NFC pairing, LE Audio, Auracast, or any advanced Bluetooth audio codecs such as aptX, aptX HD, aptX Adaptive, aptX Lossless, aptX Low Latency, LDAC, or AAC. On the wired side, the speaker includes two USB ports and a USB Type-C connection, but lacks a 3.5mm audio jack socket, a 3.5mm male connector, and an AUX input. It does not support Wi-Fi, AirPlay, Chromecast, DLNA, or Ethernet, and there is no external memory slot or microphone input available.
The Anker Soundcore Boom 3i can be used wirelessly and supports remote smartphone control, giving users a degree of flexibility in how they manage playback. It includes voice prompts and a sleep timer, adding some practical convenience to daily use. Fast pairing, voice commands, a mute function, and radio are not available, and the speaker cannot function as a power bank.